Revealing the connection between carbonation regimes and early pozzolanic reactivity of recycled concrete powder: Impact of composition and microstructure
文献类型：期刊论文
| 作者 | Ma, Zihan2,3; Jiang, Yi2,3; He, Jionghuang2,3; Shen, Peiliang2,3; Qin, Qinglong2,3; Gu, Zhenjiang2,3; Li, Jiangshan1,4; Poon, Chi Sun2,3 |
| 刊名 | CEMENT AND CONCRETE RESEARCH
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 186页码:15 |
| 关键词 | Recycled concrete powder Carbonation Carbonation regimes Calcium carbonate |
| ISSN号 | 0008-8846 |
| DOI | 10.1016/j.cemconres.2024.107697 |
| 英文摘要 | This study aims to establish relationship between carbonation regimes and the early pozzolanic reactivity of carbonated recycled concrete powder (CRCP) by comparing the composition, structure and surface properties of the carbonation products. The surface of dry CRCP was characterized by a silica-rich layer and contains lowpolymerized silica phases along with over 18 % of unstable calcium carbonate (Cc). Wet CRCP exhibits a silica-rich surface with the highest degree of silica polymerization and stable calcite in its composition. Semi-dry CRCP has a calcium-rich surface also contains high silica polymerization and over 29 % unstable calcium carbonate, and the highest specific surface area, leading to the fastest silicon dissolution and calcium consumption during pozzolanic reactions. The early pozzolanic reaction kinetics in semi-dry and wet carbonation are limited by the dissolution of carbonation products, whereas dry carbonation does not exhibit this limitation. Understanding this connection is crucial for selecting optimal carbonation techniques to enhance waste concrete utilization. |
| 资助项目 | National Natural Science Foundation of China[52308282] ; China Resources Group |
| WOS研究方向 | Construction & Building Technology ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001368691300001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/43316]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Shen, Peiliang; Poon, Chi Sun |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Hong Kong Polytech Univ, Res Ctr Resources Engn Carbon Neutral, Hong Kong 999077, Peoples R China 3.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong 999077, Peoples R China 4.IRSM CAS HK PolyU Joint Lab Solid Waste Sci, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Zihan,Jiang, Yi,He, Jionghuang,et al. Revealing the connection between carbonation regimes and early pozzolanic reactivity of recycled concrete powder: Impact of composition and microstructure[J]. CEMENT AND CONCRETE RESEARCH,2024,186:15. |
| APA | Ma, Zihan.,Jiang, Yi.,He, Jionghuang.,Shen, Peiliang.,Qin, Qinglong.,...&Poon, Chi Sun.(2024).Revealing the connection between carbonation regimes and early pozzolanic reactivity of recycled concrete powder: Impact of composition and microstructure.CEMENT AND CONCRETE RESEARCH,186,15. |
| MLA | Ma, Zihan,et al."Revealing the connection between carbonation regimes and early pozzolanic reactivity of recycled concrete powder: Impact of composition and microstructure".CEMENT AND CONCRETE RESEARCH 186(2024):15. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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